Overview

overview

10

Static

static

10

700c7757b8...f6.exe

windows7_x64

10

700c7757b8...f6.exe

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    07-11-2021 21:47

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General

  • Target

    700c7757b81e5e615b8cab09008c08f6.exe

  • Size

    37KB

  • MD5

    700c7757b81e5e615b8cab09008c08f6

  • SHA1

    5e15027312cacc8c390659ca7cfc7d2f49c12b19

  • SHA256

    99965cf49e14830c3080cfc35132770063cb19836ef2eb7c5dbe121eb889ca25

  • SHA512

    756d3871e8437540aecac87ccd3039f10ceda2a74bc7cb88b545a888da93cc6684b355035011ec98fcdcd7278134d527ee303c70526fc66d7271ad4e28441ff6

Score
10/10
njratsvchost.exeevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

svchost.exe

C2

6.tcp.ngrok.io:19025

Mutex

26aadf41889f3fdf4dc721be5700b93a

Attributes
  • reg_key

    26aadf41889f3fdf4dc721be5700b93a

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 33 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\700c7757b81e5e615b8cab09008c08f6.exe
    "C:\Users\Admin\AppData\Local\Temp\700c7757b81e5e615b8cab09008c08f6.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:1920
    • C:\Windows\svchost.exe
      "C:\Windows\svchost.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3788
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Windows\svchost.exe" "svchost.exe" ENABLE
        3⤵
          PID:420

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Modify Existing Service

    1
    T1031

    Registry Run Keys / Startup Folder

    1
    T1060

    Privilege Escalation

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Discovery

    System Information Discovery

    1
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Windows\svchost.exe
      MD5

      700c7757b81e5e615b8cab09008c08f6

      SHA1

      5e15027312cacc8c390659ca7cfc7d2f49c12b19

      SHA256

      99965cf49e14830c3080cfc35132770063cb19836ef2eb7c5dbe121eb889ca25

      SHA512

      756d3871e8437540aecac87ccd3039f10ceda2a74bc7cb88b545a888da93cc6684b355035011ec98fcdcd7278134d527ee303c70526fc66d7271ad4e28441ff6

      Download Submit
    • C:\Windows\svchost.exe
      MD5

      700c7757b81e5e615b8cab09008c08f6

      SHA1

      5e15027312cacc8c390659ca7cfc7d2f49c12b19

      SHA256

      99965cf49e14830c3080cfc35132770063cb19836ef2eb7c5dbe121eb889ca25

      SHA512

      756d3871e8437540aecac87ccd3039f10ceda2a74bc7cb88b545a888da93cc6684b355035011ec98fcdcd7278134d527ee303c70526fc66d7271ad4e28441ff6

      Download Submit
    • memory/420-120-0x0000000000000000-mapping.dmp
      Download
    • memory/1920-115-0x0000000002D30000-0x0000000002D31000-memory.dmp
      Filesize

      4KB

      Download
    • memory/3788-116-0x0000000000000000-mapping.dmp
      Download
    • memory/3788-119-0x0000000002A01000-0x0000000002A02000-memory.dmp
      Filesize

      4KB

      Download